Design your deck
in 3D
Drag sliders. See your deck rebuild in real time. Download construction drawings with materials list. Built for DIYers, contractors, and architects.
Real-time 3D
Adjust width, depth, joist spacing. The deck rebuilds instantly in the browser.
Construction drawings
Download a PDF with plan view, section view, and materials list.
Material list
Exact count of boards, joists, posts, and fasteners. Take it to the lumberyard.
Free construction calculators
Quick answers for every deck, fence, and stair question.
Board Feet Calculator
Calculate board footage and cost for any lumber size
33K searches/mo
Fence Post Calculator
Posts, depth, concrete, and materials for any fence
5K searches/mo
Roof Pitch Calculator
Convert rise/run to pitch ratio, angle, and rafter length
27K searches/mo
Stair Stringer Calculator
Risers, treads, stringer length, and cut angles
12K searches/mo
Deck Joist Span Calculator
Max joist span by lumber size, species, and spacing
41K searches/mo
Common questions
Is the deck planner really free?
Yes, 100% free while in beta. Design as many decks as you want, download construction drawings, no signup, no credit card. In the future, premium features like engineered PDFs may be paid, but everything currently available is free forever for existing users.
Do I need to install anything?
No. The deck planner runs in any modern browser (Chrome, Safari, Firefox, Edge). Works on desktop, tablet, and mobile. No downloads, no plugins, no account.
Can I use the drawings for a building permit?
The generated drawings include dimensions, material lists, and construction details suitable for most residential projects. Always check with your local building department first; permit requirements vary by jurisdiction. For engineered drawings, consult a licensed structural engineer.
What will noku3d support next?
Decks first. Pergolas, carports, fences, sheds, glass rooms, and saunas are on the roadmap. The core engine is category-agnostic, so new products are a matter of adding parametric templates.